Oklahoma provides an income tax credit of 50% of the cost of converting a vehicle to run on an alternative fuel, or for 50% of the new, OEM incremental cost for an alternative fuel vehicle. The state also provides a tax credit of 10% of the total vehicle cost, up to $1,500, on AFV resales if a tax credit has not been previously taken on the vehicle. This tax credit extends to low-speed electric vehicles as defined by NHTSA in 49 C.F.R. 571.500 and to forklifts and other similar self-propelled vehicles.

The state provides a tax credit of up to 50% of the cost of installing refueling infrastructure for AFVs. These tax credits can be taken over a three-year period. The alternative fuels eligible for credit include compressed natural gas (CNG), liquefied natural gas (LNG), liquefied petroleum gas (LPG), methanol, and electricity. These credits expire January 2009. (Reference §68-2357.22)